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IDProjectCategoryView StatusDate SubmittedLast Update
0006101Xdmfpublic2007-11-30 04:112012-03-27 11:10
ReporterDominik Szczerba 
Assigned To 
PrioritynormalSeveritymajorReproducibilityalways
StatusnewResolutionopen 
PlatformOSOS Version
Summary0006101: xdmf does not take adventage of hdf5
Descriptionxdmf requires 0-based row-major arrays. This makes it effectively impossible to use data produced with fortran or matlab. hdf5 specification do not require such restrictions at all and xdmf should not either. Handling arbitrary offset connectivity arrays is trivial at an expense of one metadata attribute. Reading column-major data will require both an attribute as well as transposing; more difficult but not limiting xdmf to the C community.
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(0017666)
jhgoebbert (reporter)
2009-09-21 04:56

 Hi,

can you give more information with what hdf5-command you can set the offset and transposing of an array (http://www.hdfgroup.org/HDF5/doc/RM/RM_H5Front.html [^]) ?

I asked for that, but did not find a standard(!) way of hdf5 - of course you can always add some metadata attributes, which only your own application can interpret.

Greetings
Jens
(0028979)
Giovanni (reporter)
2012-03-27 11:10

 Hi,
for what concerns the offset question you can try specifiying the BaseOffset attribute.

Here is an example:
<Topology TopologyType="Tetrahedron" NumberOfElements="342" BaseOffset="1">

I hope this is the answer you are looking for.

Best Regards
Giovanni

 Issue History
Date Modified Username Field Change
2007-11-30 04:11 Dominik Szczerba New Issue
2009-09-21 04:56 jhgoebbert Note Added: 0017666
2012-03-27 11:10 Giovanni Note Added: 0028979

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